Slime-concentrator.



W. B. DIRROW:

SLIME CONOBNTRATOR. APPLICATION FILED we. 21, mos.

Patented Aug. 13,1912,

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. SLIMB OONGENIRATOR.

Patented Aug. 13, 1912.

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"WILTON nannow, o. sutr'rnncnnnn; oamronmay sLmn-coucnnmmmon.

Patented Aug. 13, 1912;

Toaltwhom it may concern:

"Be-1t known that I, lVILToN F. Dnnnow,

citizen of the United States, residing at invention, such as will enable others skilled in the art-to which itnppertaius to -make .anduse the same, reference being had to the accompanying drawings, and to the letters and figures of. reference marked thereon, which-form a part of this specification.

My invention relates to improvements in concentrating apparatus more especially de signed :tor the separation of slin'ies from the .gapgue with which they are mingled. The term slimes in thisconnection means the lighter, and exceedingly fine metallic values whose specific gravity is not sufficient to cause them to readily stratify. words, they are normally held in suspension by the water and are lost with the gangue when ordinary concentrators are employed. In other words a concentrating apparatus which is adapted for the saving of the coarser mineral values is" ordinarily notadapted for; saving the finer and lighter values, termed slimes, as above ind' 'atcd.

- "While my improved construction is particularly adapted for the saving ,of slimes as aforesaid. it'may also be employed for the saving of both the sliines and the heavier and-woarser values. When operated for this purpose,- 'the movement. to which "the tables are subjected, being a longitudinal vibratory action, imparted by a difi'erential mechauism, causes the slimes to stratify upon a warns-covered topzor'tablm. while the 'differential'movementis of such character as being arranged in one plane, and another gang or series in an upper or lower plane. In other words, the different series of tables are arran ed one aboveanother, the number 55 of series epend ng upon the requiredcapac;

ity of the apparatus.[ The entir-strhot'uro.

In other v carrying the tables is mounted to rotate and the launder which delivers the pulp directly to the tablcs, rotates with the latter, a stationary supply launder being mounted above the main launder. The launder which delivers material to the tables is continually. receiving a supply from the stationary". launder, but the lattcris divided so that the pulp is delivered to the tables during only a portion of each circuit or coinpleterotatien, wash water from the launder being delivered to the tables during another ,por-f tion 01 the rotation, while during a compa'ratively short portion at the end of each 7 revolution, the wash water is cut oil' and sprays of water are directed upon the tables,v one'spray being employed for the purpose ot washing off the middlings and another and subsequent spray being used for removing the pure metallic values. Immediately 1 after thisis cmupleted, the tablesinove under the portion of the launder which do? livers pulp thereto, and the operation. here ml'ore outlined is repeated-on each series of 30' tables. r I Having, briefly outlined my improved construction, I will proceed to describe the same in detail, reference being made to the ac- (,zompanying drawing in which is illustrated as an embodiment thereof. 1 1 In this drawing Figure 1 is a .plan view" of my improved concentrating. apparatus] looking downwardly uponthe tables with the launders and other mechanism above eo removed. This view maybe termed a sec-Q tiontaken on the line 1-1 F ig. 2 viewed in the direction of the arrow. -Fig..2 is a verti cal section of the apparatus ,takeirapproximatcly on the line 2-21Eig. 1.; Fig. 3 is a fragmentary view 'sl'iowin-g, a, portion) of the; structure illustrated in. Fig. 21 but. onva largcr .v scale. This view, illustratesmore,particuflj larly the means for impartingnthe (lifteren tial reciprocating or vibratory movement tot-lot the ditferent series of,tablesn lflig it is a top plan view of the initial;launderien ploymi in connection withmy improved ap paratus. 3 .v

The same reference chari'icters indicate theg same parts in all the views. I Y Letthe numeral 5 design'atea stationary; fraInc-work whose', lower-portion or. base 6,.

iis provided with a step-box 7,1;in which is journaled the lower entrernity-j of a vertt nt vcall -rdqsposegl shaft 8; thenppcrae itremity or t is SlillftglfijOlHZ-llflltld at 9 in a stationary words, the adjustment of this plate determines the depth of the accumulation of concentrates within the depression 56. The pulp to be treated upon the tables, is fed thereto by means of depending conduits 59 means of fastening devices 62. These plates are supported between the side arms 37 of the tables and are curved to discharge the pulp upon the inner extremity of the body of the table; they are located immediately above the table depressions 56 and serve to prevent the pulp from entering these depressions before it passes to the body of the table. The conduit 59 leads from the inner compartment 26 of the launder 24-, while conduit leads from the outer compartment of the said launder; 7

It must be understood that a feed pipe 59 leads to each table 36 of thelower deck, while a feed pipe (30 leads to each table 36 of the upper deck of tables. Furthermore, each .of these conduits leads from the lowest parttSS of each portion or section (34 ofthe launder 2 Each of these launder portions 64 is composed of a bottom which is'downwardly .inclined in both directions, thus making it practicable to'remove the entire contents of the launder by the use of the conduits 59 and 60. Attention iscalled to' the fact that the upper stationary launder 28- is provided with a partitionwhich separates the same into a pulp compartment and'a water compartment. The locationof this partition-is indicated at 65 (see Fig. 1). As this view is really a section taken below the launder 28 it is in'ipracticable to show the partition in the launder but its location is indicated thereon and this is all that is thought necessary. This launder is also provided with another'partition whose location is-indicated at 66 in Fig. 1 and a third partition whose location is indicated at 67.

Assuming that the rotarty structure is traveling'in the direction indicateed by the arrow in F 1', it mustbe-understood that the stationary launder .28 is so constructed that it delivers pulp to the tables while they are traveling underneath the portion of the.

launder extending in the direction indicated s by the arrow, from the partition 67 to the partition- 65. While the tablesare passing underneath the portion of the launder from the partition (35 in the .ijlirection' indicated to the partition (56; wash water is fed to the tables, while froin' the partition 66 to the partition 67 there is no, discharge iroin the launder to the tablessince while they are passingffrom one of these partitions to the other. concentrates are removed from the tables through. the action of the spray pipes. 65'

GS and 69; The spray pipe 68 is sppplied with water from'a conduit 70 having a,

valve 71; while the spray pipe 69 is supplied with water from a conduit 72 having a valve 73. The spray pipe 68 is of suchiength as to mver only the outer portion of 70 the table from which the in'iddlings arewashed. It. is assu1ned,after the wash water has been delivered to the tables from the launder 2%, that the outer portion of theta blc will contain some mineral. values that are not entirelyclcau, These I term middlings, and it is the function of the water from the spray pipe (38 to washthese mid dlings from the tables into a trough 7i having an outlet75. Witter these middlings are 0 removed the remaining material upon the table consists olpure concentrates and is washed therefrom by thc spray pipe 69 into a trough or receptacle 7 6 having a discharge outlet 77. When the structure is in oper ation a relatively slow movement'is iinparted to the platform 21 and the superstructure mounted lhereonrby a cablei78 which engages a groove 79 formed in, the periphery of the platform which is circular in shape. This cable engages guide pulleys 80 located adjacent an operating pulley 81 fast upon a vertically disposed shaft 82. The operating cable passes around the pul ley 81. The shaft 82 and this pulley are ro-' tated by a belt 83 engaging a pulley 84: also fast on the shaft- This belt 83 may lead from a line-shatt or other suitable operating device or motor not shown:

'hen the machine 18 in operation the 'ilattorni E21 and the tables mounted thereon ,rotate at a relativelv lowspeed or trai'el slowly, while the shaft 8 and the operating cam'mounted thereon is sup weed to rotate rapidly at a speed considera idy greater Hence it is imma teral whether or not the tables rotate in the same direction as the shaft 8 since the dif- -ference in speed will be sufficient to make it practicable to impart to the tables the required di'tlerential motion through the medium ot the cam ll and the actuating springs lS. It will be understood that during the operation of the machine, the outer stroke of the longitudinal reciprocating or vibratory movement is imparted to the tables by the cam members 15, while the re turn movement is imparted by the springs 43 which are placed under tension during, the outward stroke of the tables. This cam togetherwith the actuating"springs; is so constructed and arranged that the reciprocating vibration imparted to the tables through their combined agency, serves iostrati'ty the slimcs upon the top of the table which is supposed to he covered with canvas or other suitable woven. or plush material adapted to answer the purpose. it the same time this ditlercntial movement is such that the heavier or coarse /concentrates, if the ""13; should contain the latter, ar aused 'a-vel rearwardly upon the t and argc into the depre extremity of each table. A rein What has already been stated itriill beunderstood that the tables. assuiningtl'iat they are traveling in the direction indicated h 11 the arrow in Fi 1 will re ceii-"e pulp from the launder 24- While tr cling from the partition 6? to the par '65; While traveling from. too partition 65 to partition 66, they will receive Wash Water; end finally While traveling from the partition 66 to the part1t1on'67 the table will receive nothing from the launder since during this interval the iniddlings and pure concentrates are washed from the tables tluwough the agencyof the spray pipes .68 69 as heretofore explained. The eleu just referred to as partitions 67, 65 our 68 may rather he considered as positions than partitions, since in Fig. 1 the crete structures cannot be illustrated. In

view, hovv'everthe inner and outer dotcircles A. and B designa-tethe portions oi? the launder 28. During the operation of the structure it "will be understood thatring the Stratification of the sliines upon tables and the saving of the heavier n ral values by causing them to travel .Jlldly, and lodge in the depressions 5.6 r the inner extremity of the tables; the gun travels outwardly upon the "tables l is discharged into a lower launder 85. ffhecentrifugal force due to the, rotary action of the structure, aids in the separation and discharge of the gangue.

Attention is called to the fact that by virtue of the special construction of the cam 14, whereby the eccentricity of the cam members varies, the difierential motion imparted to the tables may be Varied in iniality to adapt them for use With various gradesor kind of material. As'shown in the drawing, a trough or receptacle 86 is mounted upon the rotary platform and lo' cated "in position to catch the coarse con c entratcs as they are discharged from the depressions 56;,at the. inner extremities of the various tables. 1 8

Upon the bars are mounted plates 87 which close-the spaceshet-ween the tables o and prevent-the possible escapcof pulp or Water between the" tables during the op eration of the machine,

I Having thus described my invention hat I claim is: l. A concentrator comprising a series oftahles arranged in circular form, andcenarally located rotary means for simultaneously imparting a diiierential outward motion to the tables, said means including a vcriic' cam nieinhc i and-Whose eccentricity varies in a vertical direction, radially disposed rods connected with one extremity of the tables and engaging the surface of the cam whereby mo tion is imparted to the tables in an outward direction tension springs mounted on the rods whereby motion is imparted to the tables in aninivard direction, and means tor iadjusting the cam whereby the reciprocation of the tables is varied, substantially as described.

3. A concentrating apparatus comprising upper and lower decks of tables arranged.

- in circular form, guide members upon which the said tables are slida oly mounted, means for imparting a reciprocating motion to the said tables, COYDPI'lSlHg a centrally located] rotatable cam mounted upon an operating shaft, the said cam being provided with. 'cain niemhers on opposite sides, and whose.

eccentricity varies in a vertical direction; radially arranged rods connected With the tables and engaging the surface of the said cam means for holding the rods in engagement with the surface of the rotatable earn, the said ,cain being vertically :uljustahle upon the oncrating shaftwherehy the re- -ci tirocating motion of the tables may he yaried, substantially as described.

4. A concentrating apparatus comprising afpluralit-y of decks of tables arranged in circular series, means for rotating all of the tables, and a centrally located rotatable and adjustable cone shaped member provided with cainmeinbers on opposite sides, hose eccentricity varies ina vertical direction, -for simultaneously imparting motion to all of the tables of the several doks'in an outward direction, the corresponding table sections ofthe diilerent decks being connected to a common actuating means adapted to be actuated by said cam ineinherasubstantially asdescribed.

In testimony Whereof'l aiiix my signature in presence of tWO Wlt-II GSSGS.

WILTON E. DARROKV.

l 'Vit-nesses ALODIA Hurcursoru P. J- Enivm Rosrrsorn A concentra rug! apparatus comprising llil 

